Prominent theories explaining the rise of populism, like, for example, the cultural backlash theory, predicts populism to be associated with an aversion against post-modern values such as gender and racial equality (e.g. Norris and Inglehart, 2018). This paper explores how the widely used populist, pluralist and elite survey index (e.g. Akkerman, Mudde and Zaslove, 2014) relate to questions regarding attitudes towards gender equality. This way, it test to what extent populism as thin ideology relates to specific post-moden values like an aversion against gender-equality. Empirically, the paper relies on cross-section representative data from Denmark, which was collected in 2019. The paper's finding brings forward the general study of populism by empirically exploring to what extent the thin ideology of populism is to be tied to the question about post-modern values as a novel cleavage to be added to the broader puzzle of societal cleavages in the post-modern western world.